The Amphitheater of Anguish: Yggdras! starts Northrend's Ring of Blood quest chain. The quest text is slightly different for those players who completed the Nagrand Ring of Blood chain and is denoted below.

I'll tell you what, buddy, this place is a far cry from the rolling plains of Nagrand. These trolls are dirtier than ogres; but hey, I go where the gold's at! So welcome to Zul'Drak, pal.

You're new to this racket, so let me set you straight. I'm the fight promoter and this feisty troll next to me is Wodin, my bodyguard. You're the entertainment. When you wanna fight, let me know and I'll set up the match.

If you're ready and got a group of friends with you, we can start! What do you say?

Ring of Blood champion:

I was wondering when you'd show up, <name>! Having a past champion of the Ring of Blood here will be a huge draw! We're gonna be rich, buddy! RICH!

Anyway, this dump is Zul'Drak. All the ice trolls seem to use it as a toilet. I dunno, the whole place is off its rocker if you ask me! Who cares, though, right? We're here to make some gold!

You know the drill, <name>. When you're ready let me know and we'll get this show on the road!

Not bad, friend. You might make some gold out here - if you manage to stay alive.

Ring of Blood champion:

Hey! I know you. Your victory at the Ring of Blood was talked about for months! Too bad you forfeited the championship when you failed to show up to defend your title! Easy come, easy go, eh? At least you're still alive.